Core for molding.



L. C. HOWE.

com; FOR mowms. APPLICATION FILED APR. 24, 1913.

1,143,399. Patented June 15, 1915.

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7 To all whom it may concern:

ran sra'rns PATENT ornrca.

LOUIS C. HOWE, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO LINK-BELT COMPANY, 015

e CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

7 CORE FOR MOLDING;

masses. V

V Specification of Letters Patent. a Patented June 15, 1915.,

Application filed April 24; 1913. Serial No. 768,315.

Be it known that I,- Louis C. Hows, a citizen of the United States, residing in Indianapolis, county of Marion, State of Indiana, have invented certain Improvements in Cores for Molding, of which the following is a specification.

My invention relates to certain improvements in that type of core which is used in making molds, where a single core extends through a group of molds.

In the drawings, I have illustrated the invention as used in connection with molds for making chain links. These molds are generally made in. groups and, in the present instance, the core forms the socket of the hooked member of each link.

The object of the invention is to construct the core so that when it becomes warped from use, this warping will take place usually at the reduced portions, leaving the body of the core substantially'straight and in straightening the core the necessary bending is effected at the reduced portions.

Great difficulty is often experienced, due to the fact that a core of even diameter throughout becomes warped from use and cannot be properly restored except aft/er con- 7 siderable care and expense.

By makingthe core in accordance with my invention, the tendency to warp is concentrated at the reduced portions, thereby leaving that part of the core affecting the castings in perfect condition. The core can be straightened in a very simple and effective manner.

In the accompanying drawings :Figure 1 is a perspective'view of a core made in accordance with my invention; Fig. 2 is a plan view showing the core in position in the cast metal within the sand mold; and Fig. 3 is a longitudinal sectional view of the core.

Referring to the drawings, A is a cylindrical core, reduced at 6-7), dividing the core into three sections a, in the present instance. This particular core is especially adapted for use in connection with a mold for making chain links and Fig. 2 of the drawings illustrates a section of one-half of a mold with the casting exposed and showing the core in position. The core extends through a series of three links D forming a socket in the hook member d of each link. The core is so designed that the reduced portions 7) thereof are located midway between the links, in the present instance. The body of the core is preferably made of metal and the body is coated with an adhesive substance, then dry core sand is applied to this adhesive coating and this sand adheres to the body and forms the outer surface of the core.

The reduced portions are of such a diameter that if the core becomes warped from use, the warping will take efiect at the reduced portions rather than at the body portion or leaving the body portions substantially straight and true and when it is necessary to straighten the cores, the bending takes place at the reduced portions.

I claim:

A core for a mold having a series of pattern prints, said core being adapted to extend over two or more of the prints and having a reduced portion adapted to be located in the mold between the prints so that, if the core has a tendency to warp, it will warp at the reduced portion.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

LOUIS C. HOWE.

Witnesses:

WM. A. ROWLAND, FnoRnNoE M. WARNER.

Gopies of this patent may be obtained for five cents each, byaddressing the Commissioner of Iatents,

- Washington, D. G. 

